Ore-separator



(No Model.)

D. OAR-SKADEN' ORE" SEPARATOR..

;{IIIIIIIIIIIIIIIIIIII T Patented May 9, 1882'.v

WI NESSES z; W/JK? WW7 UNITED STATES PATENT OFFICE.

DELOS GAR-SKADEN, OF CHICAGO, ILLINOIS.

OREFSEPARATOR.

SPECIFICATION forming part of Letters Patent No. 257,470, dated May 9, 1882,

Application filed January 18, 1882. (No model) To all whom it may concern:

Be it known that I, DELOS OAR-SKADEN, of Chicago, in the county of Cook and State of 1llinois,'have invented certain new and useful Improvements in Ore-Separators; and I do hereby declare that the following is afull, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked, thereon, which form a part of this specification.

This invention relates to machines for separating ore from the earth or its accompanying ga'ngue without the use of water and by means of a suctipgb lgshin connection with screens for siiii'ig the earthy particles of the crushed quartz carrying the minerals or mineral-bearing rocks; and it consists in certain improvements on the machine described in Letters Patent No. 250,983, granted to me December 13, 1881, which improvements will be hereinafter described and specifically claimed.

In the accompanyingdrawings, Figure lrepresents alongitudinal vertical section of aportion of an oreseparator having my improvements applied thereto; Fig. 2, an end elevation of the screen and the mechanism for jarring the same, and Fig. 3 a longitudinal vertical section of the screen.

Like letters designate corresponding parts in all the figures.

A A denote two rotary screens of a double machine. Each of these screens, betweenvits shaft on and wire-cloth b, has a continuous spiral partition, 0, on which said cloth is secured. {This spiral partition will move the material fed in at one end to the opposite end by degrees as said screen revolves, whence the material too coarse to pass through the meshes is discharged, either to be passed through the crushers again or to be elevated into an adjacent similar machine that has a siftgr or distributer with larger meshes. The wire-cloth I) is firmly 'and'co'ntitiiio'u's'ly secured to the outward edge of the continuous spiral partition 0 until it meets with a sheet-metal rim, d and e, at each end of the revolving screen, and which form a continuation of the cylindrical screen to the end of the sifter. The screen-cloth, being thus firmly secured to the spiral, is carried around by the rotation of the shaft, causing the material to pass over the greatest possible surface of the screen-cloth, and at the same time itis carried or forced along at every revolution of the shaft toward the discharge end, thus producinga positive movement of said material.

At the side where the material is fed into it,

mouth of the spout U enters the end of the sifter, so as to deliver the material behind said conical extension. This spout C can be turned clear of the sifter to admit of the removal of said sifter. The iron-rim extension eof the discharge en d of the sifter extends through the wall of the distributing-chamber and delivers the coarse material into the boot P of an elevator, whence it is carried off to another similar machine, or to the crushers or stampingmill.

The shaft a of each sifter A A is journaled in the ends of two jarring-levers, D, that are rigidly secured upon a shaft,f, at their opposite ends, which shaft is pivoted in journal-boxes that are secured to the frame of the machine. The shaft or of each sifter has a cam-wheel, g, mounted upon each end, and which rides upon a roller, h, pivoted in a suitable bearing-plate secured rigidly to the frame of the machine. The cam-wheel g has on its edge recesses or depressions g and raised portions 9 in. order that on the revolution of said wheel the sit'ter will, on the raised portions 9 coming in contact with the roller h, be raised at regular intervals, and on the depressed portions coming in contact therewith said sitter will be suddenly dropped and jarred, thereby obviating the clogging of the wire-cloth and accelerating the sifting of the material. The material thus discharged and distributed by the sifters A is dropped into the chambers E and falls upon and through the screens G and into the air-passages or air-currents H, which have an upward inclination toward the main flue I, that is in direct communication with the suction or "exhaust fan J.

. K is a direct downward continuation. of the main flue I, with inlet-wings a, that can be regulated for more or less admission of air. The bottoms of the air-passages H are also formed loo of coarse-meshed wire-cloth It, so as to form air walls. Below these are receiving-hoppers M, with valves m, which are opened by the weight of the material to allow a proper discharge of the same. The air is drawn upward in three distinct currents, which will cause a whirl at their junction that will keep the material a sufficient length of time in suspense, according to the strength or force of the aircurrent in channel K, which may be regulated so as to be strong, or entirely shut off, as desired, allowing the assortment of the material and the separation of the mineral, which by its greater gravity opposes the draft of air from the earth and gangue that is raised more or less by the force of the air-current. The two air-currents produced by the exhaust-fan J in air-passages H H, being upwardly inclined and toward each other, prevent the material distributed into the air-currents from the silters A A from being carried against the sur faces of the machine, as in a single machine. The air-currents themselves, approaching each other, throw the currents of the material into each other to some extent, and thus the material from each current is acted upon by the opposite current, thus avoiding the coming into contact with a hard surface, and thereby destroyingthe velocity of both the current and the material. Under such circumstances the material would fall into the concentration, while in a double machine, or two currents, as described, the light material will be carried up. The greater portion of the mineral or heavy particles containedin the material will be separated from the gangue by specific gravity in the air-currents in the air-passages H H, while a portion will be separated at the junction of the three'aircurrents before entering the upright duct I. The balance or lighter particles will drop into pockets N and 0.

What I claim is 1. In an ore-separator, the combination of the rotary sifter A, shaft to, cam-wheels 9, rollers h, and rocker-arms D, substantially as and for the purpose set forth.

2. In an ore-separator, the chambers E, screens G, the receiving-hoppers M, screens R, oppositely-inchned air-ducts, H, air-duct I, and the exhaust-fan J, all substantially as and for the purpose set forth.

3. In an ore-separator, the chambers E,

screens G and It, receiving-hoppers M, and intermediate inclined air-passages, H, in combination with the vertical air-duct K, having an adjustable air-inlet, i, an air-duct I, and exhaust-fan J, all constructed and arranged substantially as and for the purpose set forth.

4. In an ore-separator, the combination of the chambers E, sifters A A, and screens G and It, intermediate air-duet, I, exhaust-fan J, the receiving-hoppers M, having valves m, the two opposite inclined air-ducts, H, and the vertical intermediate air-duet, K, the whole being constructed and arranged substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my invention I affix my signature in presence of two witnesses.

I) ELOS cAn-sKADEN.

Witnesses:

F. W. KASEHAGEN,

E. H. FROMMANN. 

